Chemistry · Oct / Nov 2021 · Paper 11 · Question 12
5070The mole and the Avogadro constant
Methane burns in oxygen. CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) 10 cm3 of methane is reacted with 25 cm3 of oxygen. What is the total volume of gas that would be measured after the reaction? (Assume all volumes of gases are measured at room temperature and pressure.)
- A10 cm3
- B15 cm3
- C30 cm3
- D35 cm3
As printed in the paper
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Correct answer: B. 15 cm3
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